Debt and Credit Arrangements - Senior Secured and Unsecured Notes (Details) - USD ($)		3 Months Ended		9 Months Ended
	Dec. 22, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt Instrument
Unamortized discount		$ 27,700,000		$ 27,700,000		$ 29,900,000
Payments for debt issuance costs				133,500,000	$ 0
Financing costs amortization		4,800,000	$ 700,000	12,000,000.0	$ 2,100,000
Secured And Unsecured Debt
Debt Instrument
Redemption price, percentage of principal amount redeemed (percent)	40.00%
Redemption price (percent)	101.00%
Unamortized discount	$ 30,000,000.0
Deferred debt issuance cost	36,800,000
Payments for debt issuance costs		0.0		32,000,000.0
Financing costs amortization		900,000		2,800,000
Senior secured notes due 2030 | Secured Debt
Debt Instrument
Principal amount	$ 1,460,000,000	$ 1,460,000,000		$ 1,460,000,000		1,460,000,000
Debt instrument stated interest rate (percent)	7.50%	7.50%		7.50%
Issue price (percent)	98.661%
Senior unsecured notes due 2031 | Unsecured Debt
Debt Instrument
Principal amount	$ 510,000,000.0	$ 510,000,000.0		$ 510,000,000.0		$ 510,000,000.0
Debt instrument stated interest rate (percent)	9.50%	9.50%		9.50%
Issue price (percent)	97.949%